I feel like Bright Eyes could have been included in the fog scene when Clover and Bigwig are searching for Hazel. That scene felt like it stretched on just a whee bit too much, like they were planning on having a bit of Bright Eyes in there. Maybe it didn't sound quite right with the finished product?
In any case, I absolutely loved Fire on Fire. Still listening to it and drawing to it, it's so lovely. Definitely fits the tone and memorable imo.
The lyrics don't really fit the movie in a literal sense, it would have made more sense to have lyrics that pertain to overcoming fear, or something else related to the series, but since it's in the credits that's not as big of a deal.